fsadm — Check or resize a filesystem on a device. More information: <https://manned.org/fsadm>.

Check a filesystem for errors

fsadm check {{/dev/vg_name/lv_name}}

Perform a dry-run resize to a specific size (no changes made)

fsadm {{[-n|--dry-run]}} resize {{/dev/vg_name/lv_name}} {{10G}}

Grow a filesystem to fill the entire device (omit the size)

fsadm resize {{/dev/vg_name/lv_name}}

Resize the filesystem and the underlying logical volume together

fsadm {{[-l|--lvresize]}} resize {{/dev/vg_name/lv_name}} {{100G}}

For ext2/3/4, unmount and resize offline

fsadm {{[-e|--ext-offline]}} resize {{/dev/vg_name/lv_name}} {{20G}}